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如何使用Material Design Android實現此自定義彈出菜單?

[英]How to realize this custom popup menu with Material Design Android?

我想在Android中實現像Twitter這樣的自定義彈出菜單,例如項目和圖片,但我不知道用於此的組件是什么。

在Material Design網站上,谷歌提出了這個解決方案 所以我認為,有一個本機解決方案來實現這一目標。

在此輸入圖像描述

我嘗試使用彈出菜單 ,但我找不到如何自定義此視圖的布局。

您可以使用ListPopupWindow ,提交自定義適配器,通過它可以控制ListPopupWindow的每一行的ListPopupWindow 至於普通的PopupWindow你必須提供一個錨視圖,另外你必須在ListPopupWindow的實例上調用setContentWidth ,它將彈出窗口的寬度設置為其內容的大小。 這是一個你必須付出的小代價,但對於一個小數據集來說並不是什么大問題。 我有這個實用工具方法來檢索行的最大寬度:

public int measureContentWidth(ListAdapter adapter) {
    int maxWidth = 0;
    int count = adapter.getCount();
    final int widthMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
    final int heightMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
    View itemView = null;
    for (int i = 0; i < count; i++) {
        itemView = adapter.getView(i, itemView, this);
        itemView.measure(widthMeasureSpec, heightMeasureSpec);
        maxWidth = Math.max(maxWidth, itemView.getMeasuredWidth());
    }
    return maxWidth;
}

有一個名為PopupMenu的小部件,它基本上是一個錨定到特定視圖的菜單。 一個缺點是它默認不顯示圖標。

但是,您可以使用反射並調用setForceShowIcon來顯示它們。 您需要的代碼是:

  • 由於PopupMenu錨定到特定視圖,因此ActionBar項具有actionLayout屬性。 該布局( action_item.xml )可以簡單如下:

     <Button xmlns:android="http://schemas.android.com/apk/res/android" style="?attr/actionButtonStyle" android:layout_gravity="center" android:text="Show popup" android:textStyle="bold" android:textSize="12sp" android:layout_width="wrap_content" android:layout_height="match_parent"/> 
  • ActionBar菜單樣式,包含具有上述布局的項目

     <menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/popup_item" android:title="Show popup" android:showAsAction="always" android:actionLayout="@layout/action_item"/> </menu> 
  • 你的popup_menu.xml ,你將為你的PopupMenu充氣的布局

     <menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/item1" android:title="Item1" android:icon="@mipmap/ic_launcher"/> </menu> 
  • 最后,在單擊ActionBar項目時執行通脹的代碼

     @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.action_add_item: PopupMenu popup = new PopupMenu(this, item.getActionView()); MenuInflater inflater = popup.getMenuInflater(); inflater.inflate(R.menu.popup_menu, popup.getMenu()); // Use reflection to invoke setForceShowIcon try { Field[] fields = popup.getClass().getDeclaredFields(); for (Field field : fields) { if ("mPopup".equals(field.getName())) { field.setAccessible(true); Object menuPopupHelper = field.get(popup); Class<?> classPopupHelper = Class .forName(menuPopupHelper.getClass().getName()); Method setForceIcons = classPopupHelper .getMethod("setForceShowIcon", boolean.class); setForceIcons.invoke(menuPopupHelper, true); break; } } } catch (Exception e) { e.printStackTrace(); } popup.show(); return true; } return super.onOptionsItemSelected(item); } 

請注意,要在菜單中獲取多行文本,您還需要對彈出菜單項使用actionLayout

使用彈出列表片段 關於片段的好處是你可以輕松地為它們制作動畫 (如果你不理解片段,我建議先閱讀Fragment Introduction

如果要完全控制彈出內容,請參閱Dialog Fragment

我有同樣的問題。但最后我在自己的解決方案中發現我正在分享我的代碼。 希望能幫到你。

 popupWindowDogs = popupWindowDogs(); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub // popupWindowDogs.showAsDropDown(v, -5, 0); popupWindowDogs().showAtLocation(v, Gravity.CENTER, 0, 0); } }); // Detect touched area detector = new SimpleGestureFilter(this, this); 

}

 public PopupWindow popupWindowDogs() { // initialize a pop up window type PopupWindow popupWindow = new PopupWindow(this); // the drop down list is a list view final ListView listView = new ListView(this); // set our adapter and pass our pop up window contents listView.setAdapter(dogsAdapter(popUpContents)); // listView.setBackgroundColor(Color.DKGRAY); listView.setBackgroundResource(R.drawable.ss4); listView.setPadding(0, 0, 0, 10); listView.setDivider(null); try { listView.setOnScrollListener(new OnScrollListener() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { View c = listView.getChildAt(0); String cc = listView.getChildAt(0).toString(); int scrolly = -c.getTop() + listView.getFirstVisiblePosition() * c.getHeight(); /* * Toast.makeText(getApplicationContext(), scrolly + "", Toast.LENGTH_SHORT) * .show(); */} @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { } }); } catch (Exception e) { Toast.makeText(getApplicationContext(), e.toString() + "", Toast.LENGTH_SHORT) .show(); } listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View v, int arg2, long arg3) { try { // TODO Auto-generated method stub Context mContext = v.getContext(); Swipetouch mainActivity = ((Swipetouch) mContext); // add some animation when a list item was clicked Animation fadeInAnimation = AnimationUtils.loadAnimation(v.getContext(), android.R.anim.fade_in); fadeInAnimation.setDuration(10); v.startAnimation(fadeInAnimation); // dismiss the pop up mainActivity.popupWindowDogs.dismiss(); // get the text and set it as the button text String val = (String) arg0.getItemAtPosition(arg2); // Toast.makeText(mContext, val, Toast.LENGTH_SHORT).show(); if (val.equals("Signup Now")) { Intent ii = new Intent(getApplicationContext(), Registration.class); startActivity(ii); stopService(new Intent(Swipetouch.this, MyService.class)); stopService(new Intent(Swipetouch.this, MyService.class)); } else if (val.equals("Login")) { Intent ii = new Intent(getApplicationContext(), MyLoginActivity.class); startActivity(ii); stopService(new Intent(Swipetouch.this, MyService.class)); } else if (val.equals("Exit")) { finish(); stopService(new Intent(Swipetouch.this, MyService.class)); } else if (val.equals("Friends")) { Intent ii = new Intent(getApplicationContext(), MyLoginActivity.class); startActivity(ii); } else if (val.equals("Exit")) { stopService(new Intent(Swipetouch.this, MyService.class)); finish(); } } catch (Exception e) { Toast.makeText(Swipetouch.this, e.toString(), Toast.LENGTH_SHORT).show(); } } }); // some other visual settings popupWindow.setFocusable(true); popupWindow.setWidth(250); // popupWindow.setHeight(300); popupWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT); // set the list view as pop up window content // SET WALLPAPER IMAGE /* * popupWindow.setBackgroundDrawable(getWallpaper()); popupWindow.setHeight(300); */ // layout.setBackgroundResource(R.drawable.sshadow); // layout.setBackgroundColor(Color.TRANSPARENT); // popupWindow.setContentView(layout); popupWindow.setBackgroundDrawable(new ColorDrawable( android.graphics.Color.TRANSPARENT)); popupWindow.setContentView(listView); return popupWindow; } 

此代碼在我的應用程序中工作。

嘗試這個 :-

<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".LocationDetailsActivity">


<item xmlns:tools="http://schemas.android.com/tools"
    android:icon="@android:drawable/ic_menu_mapmode"
    app:showAsAction="ifRoom"
    android:title="@string/title_of_menu"
    tools:context=".LocationDetailsActivity">
    //the menu list with icon
    <menu>
        <item
            android:id="@+id/action_map_type_normal"
            android:orderInCategory="100"
            android:icon="some_icon" //place your icon here
            android:title="Vacation spots" />
        <item
            android:id="@+id/action_map_type_satellite"
            android:orderInCategory="100"
            android:icon="some_icon" //place your icon here
            android:title="Friends and family" />
        <item
            android:id="@+id/action_map_type_hybrid"
            android:orderInCategory="100"
            android:icon="some_icon" //place your icon here
            android:title="Restaurants" />
    </menu>
</item>

您可以從這些不同的提供程序中查看教程

http://developer.android.com/guide/topics/ui/actionbar.html

http://www.vogella.com/tutorials/AndroidActionBar/article.html

http://www.androidhive.info/2013/11/android-working-with-action-bar/

所有這些都有很好的示例和源代碼來幫助您

希望這對你有所幫助:)

  try {
                    java.lang.reflect.Field[] fields = popup.getClass().getDeclaredFields();
                    for (java.lang.reflect.Field field : fields) {
                        if ("mPopup".equals(field.getName())) {
                            field.setAccessible(true);
                            Object menuPopupHelper = field.get(popup);
                            Class<?> classPopupHelper = Class
                                    .forName(menuPopupHelper.getClass().getName());
                            Method setForceIcons = classPopupHelper
                                    .getMethod("setForceShowIcon", boolean.class);
                            setForceIcons.invoke(menuPopupHelper, true);
                            break;
                        }
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }

更簡單的解決方案 在.show()方法之前添加它。

try {
  Field mFieldPopup=popupMenu.getClass().getDeclaredField("mPopup");
  mFieldPopup.setAccessible(true);
  MenuPopupHelper mPopup = (MenuPopupHelper) mFieldPopup.get(popupMenu);
  mPopup.setForceShowIcon(true);
} catch (Exception e) {}

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